diff --git a/CMakeLists.txt b/CMakeLists.txt
index 175679e..17137e2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -23,6 +23,8 @@
 ########################################################################
 cmake_minimum_required(VERSION 2.6)
 project(gr-gr-air-modes CXX)
+set(gr-gr-air-modes_VERSION_MAJOR 0)
+set(gr-gr-air-modes_VERSION_MINOR 0)
 enable_testing()
 
 #select the release build type by default to get optimization flags
diff --git a/lib/CMakeLists.txt b/lib/CMakeLists.txt
index 5a9504f..a2abad5 100644
--- a/lib/CMakeLists.txt
+++ b/lib/CMakeLists.txt
@@ -29,6 +29,8 @@ add_library(air_modes SHARED
 )
 target_link_libraries(air_modes ${Boost_LIBRARIES} ${GRUEL_LIBRARIES} ${GNURADIO_CORE_LIBRARIES})
 set_target_properties(air_modes PROPERTIES DEFINE_SYMBOL "AIR_MODES_EXPORTS")
+set_target_properties(air_modes PROPERTIES SOVERSION "${gr-gr-air-modes_VERSION_MAJOR}")
+set_target_properties(air_modes PROPERTIES VERSION "${gr-gr-air-modes_VERSION_MAJOR}.${gr-gr-air-modes_VERSION_MINOR}")
 
 ########################################################################
 # Install built library files